Stacking device



FIG. 1 is a front left oblique view of the instant invention.

FIG. 2 is a rear right oblique view of the instant invention.

FIG. 3 is a rear view of the instant invention.

FIG. 4 is a front view of the instant invention.

FIG. 5 is a top view of the instant invention, the bottom view is the mirror image; and,

FIG. 6 is an end view of the instant invention, the opposite end view is the mirror image. 

CLAIM The ornamental design for a stacking device, as shown and described. 